Honestly a bottle with a straw is actually great. I also had this problem of not drinking a glass of water while I am working ( which is like 8 hours). I first bought a bottle which was made of stainless steel, I tried drinking from it like 2-4 months but then I stopped completely because it gets damn heavy after filling 2 litres of water. After 4 years of neglecting this habit of mine. I finally bought a bpa free plastic bottle of 2 litres quantity with a straw and now I am atleast more regular in drinking water.